// Copyright (c) 2008-2009 Marcos José Sant'Anna Magalhães
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.IO;

namespace MusiC
{
	//---------------------------------------//

	/// <summary>
	/// 
	/// </summary>
	/// @todo Make sure base Attach and Detach are executed.
	abstract
	public class BaseHandler : Extension, IHandler
	{
		private string _file;

		//::::::::::::::::::::::::::::::::::::::://

		//// <value>
		/// 
		/// </value>
		public string CurrentFile
		{
			get { return _file; }
		}

		//::::::::::::::::::::::::::::::::::::::://

		/// <summary>
		/// 
		/// </summary>
		virtual
		public bool CanHandle( string file )
		{
			return false;
		}

		//::::::::::::::::::::::::::::::::::::::://

		/// <summary>
		/// 
		/// </summary>
		virtual
		public void Attach( string file )
		{
			if( System.IO.File.Exists( file ) )
			{
				_file = file;
			}
			else
				Detach();
		}

		//::::::::::::::::::::::::::::::::::::::://

		/// <summary>
		/// 
		/// </summary>
		public DBHandler GetDBHandler()
		{
			return new DBHandler( _file );
		}

		//::::::::::::::::::::::::::::::::::::::://

		/// <summary>
		/// 
		/// </summary>
		virtual
		public void Detach()
		{
			_file = null;
		}

		//::::::::::::::::::::::::::::::::::::::://

		abstract
		public int GetStreamSize();
	}

	//---------------------------------------//

	namespace Managed
	{
		/// <summary>
		/// 
		/// </summary>
		abstract
		public class Handler : BaseHandler
		{
		}
	}

	//---------------------------------------//

	namespace Unmanaged
	{
		/// <summary>
		/// 
		/// </summary>
		[CLSCompliant( false )]
		abstract
		public class Handler : BaseHandler
		{
			abstract unsafe
			public Single* Read( long windowPos, int windowSize );
		}
	}
}